220 - Lhe Species of Amblychila. [ZOE 
considering the Dupont specimens as those of the Texan form of 
cylindriformis. But what are we to do with the great bulk of 
the description by Reiche, which does not fit cylindriformis Say; 
_and what with the figure in Thomson, which is a good portrait 
of my recent addition from Arizona? In the description of 
A. Baroni a glaring mistake was made in sex, calling the 
example a female when it should have been recorded as a male, 
as a subsequent examination proved it to be. 
Say’s description may be taken as fairly good. His appli- 
cation of the name is also good, as it would be applicable. ‘The 
form is subcylindric or subquadrate, but neither of these terms 
would be appropriate to either of the other species or forms, 
because they are wider than deep, and altogether flatter insects. 
DEsScRIPTION: Form gracefully elongate-oval. Above wholly 
shining black with high polish. Beneath also shining black. 
Head subquadrate; clypeus with the usual marginal punctures; 
behind the clypeal suture are two punctures widely separated; 
behind the second or frontal suture are two punctures as in 
A. Baroni but there are about ten or twelve other punctures 
- differing both in number and position from those seen in Baronz. 
Thorax strongly convex; longer than wide as observed from 
above; broad across the front and produced in the middle ; much 
narrowed behind; from the front angles runs a well defined 
raised continuous marginal line which extends along the lateral 
and basal margins; an uneven longitudinal central impressed 
line begins infirmly on the basal margin and ceases about 
where the arcuate impressed line crosses the fore part of the disc, 
Elytra twice as long as wide; much flattened on the central 
area; two-thirds from sutural line arises a well-defined carina, it 
is high and sharp, beginning at the base and ending abruptly — 
one-fourth from the apex. A raised line just as bold as the 
carina runs nearly parallel to it, but beginning a little short of 
the base and ending firmly and nearer the apex than does the 
carina, this line is punctured at wide intervals and becomes 
slightly serrate at the base. Another raised line, which might 
be termed the acute margin, begins on the basal angle but does 
not reach so near to the apex as the other line or the carina; 
this line is strongly mucronate and at the basal angle it becomes 
